The role of surface states in magnetic properties of nanocrystalline CuO

被引：10

作者：

Arbuzova, TI ^{[1
]}

Naumov, SV ^{[1
]}

Samokhvalov, AA ^{[1
]}

Gizhevskii, BA ^{[1
]}

Arbuzov, VL ^{[1
]}

Shal'nov, KV ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Met Phys, Ural Div, Yekaterinburg 620219, Russia

来源：

PHYSICS OF THE SOLID STATE | 2001年 / 43卷 / 05期

关键词：

D O I：

10.1134/1.1371369

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The temperature behavior of the magnetic susceptibility of a CuO low-dimensional antiferromagnet subjected to spherically converging isentropic shock wave loading is investigated. The grain sizes in CuO polycrystalline samples range from 5 to 110 nm. It is demonstrated that a decrease in the grain size leads to an increase in the role of the surface states in the magnetic properties. Unlike polycrystals prepared by standard methods, the susceptibility of nanocrystalline samples in the range 78 K < T < 150 K decreases with an increase in temperature, which is explained by the formation of Cu2+ paramagnetic ions on the surface of nanocrystalline particles. (C) 2001 MAIK "Nauka/Interperiodica".

引用

页码：878 / 883

页数：6

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